Dirhodium(II) carboxylates as building blocks.: Macrocyclic dimers with vertically stacked Rh24+ units

被引：15

作者：

Bonar-Law, RP ^{[1
]}

Bickley, JF ^{[1
]}

Femoni, C ^{[1
]}

Steiner, A ^{[1
]}

机构：

[1] Univ Liverpool, Dept Chem, Liverpool L69 7ZD, Merseyside, England

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 2000年 / 23期

关键词：

D O I：

10.1039/b007625m

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of Rh-2(OAc)(4) and H2L (=2,7-di- tert-butyl-9,9-dimethyl-4,5-xanthenedicarboxylic acid) in N,N-dimethylaniline gave the singly bridged dimer (AcO)(3)Rh2LRh2(OAc)(3) and three doubly bridged dimers, (AcO)(2)Rh2L2Rh2(OAc)(2), (HL)(AcO)Rh2L2Rh2(OAc)(2), and (HL)(AcO)Rh2L2Rh2(OAc)(HL). Crystal structures of the last two compounds showed a macrocyclic core with a trans arrangement of bridging dicarboxylates, with one or two of the four remaining acetate ligands replaced by a bridging ligand bound through one carboxylate only. The rhodium cages are separated by 4.5 Angstrom in the direction of the Rh-Rh axes, and offset horizontally by 2.5 Angstrom so that a rhodium atom of one cage lies over a carboxylate oxygen of the other, with Rh . . .O distances of 2.248-2.286 Angstrom.

引用

页码：4244 / 4246

页数：3

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